[Botany • 2020] Macrotorus genuflexus (Monimiaceae: Mollinedioideae) • Cytogenetics, Geographic Distribution, Conservation, and a New Species of Macrotorus from the Brazilian Atlantic Forest

 

Macrotorus genuflexus  Lírio & Peixoto, 

in Lírio, Peixoto, Sano et Moraes. 2020. 

 DOI: doi.org/10.1600/036364420X16033962925231   

 Researchgate.net/publication/378096987

 

Abstract

A new species of Macrotorus (Monimiaceae) from the Brazilian Atlantic rainforest is here described and illustrated: Macrotorus genuflexus. This species, restricted to the Poço das Antas Biological Reserve (situated in the central region of Rio de Janeiro state, Brazil), is the second in the genus Macrotorus. The new species description is based on morphological and cytogenetic (karyotype and genome size) comparative analyses. We also report a new record of Macrotorus utriculatus for the state of Bahia, confirming a potential distribution modelling prediction, and provide comments for the conservation of both species.

  Line drawing of Macrotorus genuflexus.  
 A. Branch with staminate flowers. B. Carpel detail. C. Pistillate flower dissected showing the inner receptacle and carpels. D. Detail of the trichomes on the abaxial face of the leaf lamina. E. Pistillate inflorescence. F. Staminate inflorescence. G. Detail of the flower dissected in longitudinal section showing the stamens. H. Internal stamen. I. External stamen. J. Multiple fruit and drupelet. K. Drupelet with section of the pericarp showing the seed.

 Illustrated by Susana F. Souza. 

Vouchers: E. J. Lírio & M. Ribeiro 1351 (A, D, F, G, H, I); 1352 (J, K); 1353 (B, C, E).

Photos of Macrotorus genuflexus.  
 A. Habit. B. Trunk. C. Branch with staminate flowers. D. Staminate inflorescence. E. Staminate flower tepals. F. Detail of staminate flower dissected in longitudinal section showing the genuflexed stamens. G. Pistillate inflorescence with lanceolate bracts. H. Cluster of fruits. I. Seed.

Photos: Elton J. Lírio (A, B, C, D, I, J); Michel Ribeiro (E, F, G, H). Vouchers: E. J. Lírio & M. Ribeiro 1351 (A, B, C, D, E, F); 1353 (H, I), 1352 (G).

 

Elton John de Lírio, Ariane Luna Peixoto, Paulo Takeo Sano, and Ana Paula Moraes. 2020. Cytogenetics, Geographic Distribution, Conservation, and a New Species of Macrotorus (Mollinedioideae, Monimiaceae) from the Brazilian Atlantic Forest. Systematic Botany. 45(4), 754-759. DOI: doi.org/10.1600/036364420X16033962925231 (8 December 2020). 

 Researchgate.net/publication/378096987_Mollinedia_lorencei_a_new_species_endemic_to_the_Atlantic_Forest_in_the_state_of_Bahia_Brazil

[Botany • 2020] Dichorisandra striatula (Commelinaceae) • A New Species with speckled leaves from the Atlantic Forest, Brazil

Dichorisandra striatula Q.Moraes & M.Pell., 

in Moraes, Pellegrini et Alves‐Araújo, 2020. 

DOI: doi.org/10.1600/036364419X15710776741396

  Researchgate.net/publication/338865401

Abstract 

A new species of Dichorisandra from the Brazilian Atlantic Forest is herein described, illustrated, and compared to morphologically similar species. Dichorisandra striatula is characterized by leaf blades with small and discontinuous white stripes on the adaxial surface, hirsutulous indumentum on both surfaces, obovate to broadly obovate petals, and ellipsoid fruits. Information on phenology, habitat, conservation status, and a geographical distribution map are also provided.

Keywords: Atlantic Forest; Commelinales; Dichorisandrinae; Tradescantieae

Dichorisandra striatula Q.Moraes & M.Pell., sp. nov.  

Quélita S. Moraes, Marco O. O. Pellegrini and Anderson Alves‐Araújo. 2020. A New Species of Dichorisandra (Commelinaceae) with speckled leaves from Brazil. Systematic Botany. 44(4); DOI: doi.org/10.1600/036364419X15710776741396 

 Researchgate.net/publication/338865401_A_New_Species_of_Dichorisandra_with_speckled_leaves_from_Brazil

[Botany • 2020] Paepalanthus fabianeae (Eriocaulaceae) • A New Microendemic Species from a Morphologically Coherent Clade

 

Paepalanthus fabianeae  Andrino & Sano, 

in Andrino, Simon, Quintino Faria, Moreira et Sano, 2020.

DOI: doi.org/10.1600/036364420X16033963649318 

 Researchgate.net/publication/346720623

Abstract 

We describe and illustrate Paepalanthus fabianeae , a new species of Eriocaulaceae from the central portion of the Espinhaço Range in Minas Gerais, Brazil. Previous phylogenetic evidence based on analyses of nuclear (ITS and ETS) and plastid (trnL-trnF and psba-trnH) sequences revealed P. fabianeae as belonging to a strongly supported and morphologically coherent clade containing five other species, all of them microendemic, restricted to the Espinhaço range. Due to the infrageneric classification of Paepalanthus being highly artificial, we preferred not assigning P. fabianeae to any infrageneric group. Paepalanthus fabianeae is known from two populations growing in campos rupestres (highland rocky fields) in the meridional Espinhaço Range. The species is characterized by pseudodichotomously branched stems, small, linear, recurved, and reflexed leaves, urceolate capitula, and bifid stigmas. Illustrations, photos, the phylogenetic position, and a detailed description, as well as comments on habitat, morphology, and affinities with similar species are provided. The restricted area of occurrence allied with threats to the quality of the habitat, mainly due to quartzite mining, justifies the preliminary classification of the new species in the Critically Endangered (CR) category using the guidelines and criteria of the IUCN Red List.

Keywords: Campos rupestres; Poales; taxonomy

Paepalanthus fabianeae.
A, B. Habit. C, D. Involucral bracts, abaxial surface. C. External layers. D. Internal layers. E. Staminate flower. F. Staminate flower with sepals removed and the corolla margin rolled inwards G. Complete pistillate flower. H. Complete pistillate flower with detail of the gynoecium. (Faria, J. 8090, UB). 

Paepalanthus fabianeae.
 A. Flowering branch B. and C. Inflorescence detail. (Faria, J. 8090)

 

Paepalanthus fabianeae Andrino & Sano, sp. nov.

  Andrino, Caroline Oliveira; Simon, Marcelo Fragomeni; Quintino Faria, Jair Eustáquio; Luiz da Costa Moreira, André and Sano, Paulo Takeo. 2020. Paepalanthus fabianeae (Eriocaulaceae): A New Microendemic Species from a Morphologically Coherent Clade.  Systematic Botany. 45(4); 794-801. DOI: doi.org/10.1600/036364420X16033963649318

  Researchgate.net/publication/346720623_Paepalanthus_fabianeae_A_New_Microendemic_Species_from_a_Morphologically_Coherent_Clade

[Botany • 2024] Heliconia longipedunculata (Heliconiaceae) • A New Species of Heliconia from Colombia: A Proposal Based on Different Characters

Heliconia longipedunculata  

  

in Alzate-Guarín, Sepúlveda-Nieto et Ramírez, 2024. 

DOI: doi.org/10.1600/036364424X17267811220425 

 noticias.uniquindio.edu.co 

Abstract

Heliconia (Heliconiaceae) is a genus of giant rhizomatous herbs that have bright and striking bract inflorescences. The family consists of one genus and about 194 species that occur naturally in the tropical regions of the world, concentrating their greatest diversity and endemism in the Andean foothills and the Pacific region of Colombia, with approximately 120 species of the total registered for the world. Within the species of this genus there is high morphological variation, which sometimes makes clear identification of Heliconia specimens difficult. So is the case of Heliconia platystachys Baker, which contains two morphologically distinct groups of plants distinguished by the size and color of the bracts, the floral bracts, the mucilage that covers the flowers, and the shape of the staminodium. These structures of floral biology such as staminodium are of great taxonomic value in the study of the species within the genus Heliconia. The main goal of this work was to study Heliconia populations, which are found on the western slope of the Central Cordillera of Colombia at elevations between 970 and 1200 m, for which the morphoanatomical and palynological attributes were analyzed. We want to explore in this work whether the variation exhibited by these populations and their distribution allows us to postulate the occurrence of a new species with sufficient evidence for its separation.

KEYWORDS: Andes, floral morphology, morphometry, species key, staminode, taxonomy

Heliconia longipedunculata  

 

Fernando Alzate-Guarín, María del Pilar Sepúlveda-Nieto, and Diego Ramírez. 2024. A New Species of Heliconia from Colombia: A Proposal Based on Different Characters. Systematic Botany. 49(3); 515-521. DOI: doi.org/10.1600/036364424X17267811220425

 

Una nueva especie de Heliconia fue registrada desde la Uniquindío

  noticias.uniquindio.edu.co/noticias/publicaciones/4736

facebook.com/novataxcol/posts/955904739893116

[Botany • 2022] Euphorbia xiangxiui (Euphorbiaceae, subgenus Esula) • A Remarkable New Species from Jiufeng Mountains in Fujian Province, Eastern China

Euphorbia xiangxiui N.Wei, Q.Yu, G.X.Chen & Q.F.Wang, 

in Yu, Chen, Yang, Wang, et Wei, 2022. 

DOI: doi.org/10.1600/036364422X16442668893265 

 Researchgate.net/publication/359551396

Abstract 

Euphorbia xiangxiui, a new species of Euphorbiaceae from Eastern China, supported by morphological and molecular evidence, is illustrated and described here. It can be distinguished from its closest relatives by the combination of several characters, including taller stature (up to 1.6 m), leaves of 5‐18 × 0.6‐3 cm in size, color of primary involucral leaves and cyathophylls changing from pink to rose, fading to green after fruiting, and four to six reniform-rounded concave glands. The molecular phylogenetic analysis, based on combined nuclear ribosomal ITS and plastid ndhF sequences, further supports that E. xiangxiui should be placed in the East Asian Clade of Euphorbia subg. Esula sect. Helioscopia.

Keywords: Euphorbia xiangxiui; Flora of China; leafy spurges; phylogeny; taxonomy

Euphorbia xiangxiui N.Wei, Q.Yu, G.X.Chen & Q.F.Wang

  Yu, Qun; Chen, Guo-Xing; Yang, Yi; Wang, Qing-Feng and Wei, Neng. 2022. A Remarkable New Species of Euphorbia section Helioscopia (Euphorbia subgenus Esula, Euphorbiaceae) from Jiufeng Mountains in Fujian Province, Eastern China. Systematic Botany. 47(1); 259-267. DOI: doi.org/10.1600/036364422X16442668893265

  Researchgate.net/publication/359551396_A_New_Species_of_Euphorbia_Esula_from_Fujian_Eastern_China

https://www.cas.cn/syky/202204/t20220412_4831277.shtml

[Botany • 2022] Chamaecrista forzzae (Leguminosae) • Morphological Studies of Chamaecrista sect. Absus ser. Setosae With Emphasis on the Chamaecrista setosa Complex, including A New Species

Chamaecrista forzzae T.Silva, M.Cota & Rando, 

in Silva, Cota, Lima, Tomazello-Filho et Rando, 2022. 

DOI: 10.1600/036364422X16674053033796

 instagram.com/petala_botanicalart

Abstract 

Chamaecrista is one of the largest genera of Leguminosae, subfamily Caesalpinioideae. Traditionally, it has been divided into six sections, of which Chamaecrista sect. Absus is the largest, with 31 series. Chamaecrista sect. Absus ser. Setosae comprises nine species. Chamaecrista setosa is the most widely distributed species, comprising four varieties, distinguished by the type and distribution of glandular trichomes, and the leaflet venation. Given the importance of leaflet venation in the delimitation of the taxa, here we performed a study of leaflet architecture of all species of the series and a more detailed morphological study for the Chamaecrista setosa complex. For the study of leaf architecture, 2D images of the leaflets were made using the Faxitron x-ray technique. The morphological studies were based on herbarium specimens. We present the details of the leaflet architecture for the species of Chamaecrista sect. Absus ser. Setosae, and we propose nomenclatural changes for a variety of Chamaecrista setosa and some corrections to typifications. During our studies we also found a new species, Chamaecrista forzzae, which is morphologically similar to Chamaecrista setosa and Chamaecrista multiseta. It is here described and illustrated.

Keywords: Fabaceae; leaflet architecture; taxonomy; variety

Tatiane Santana Silva, Matheus Martins Teixeira Cota, Leonardo Maurici Borges Alexandre Gibau de Lima, Mario Tomazello-Filho and Juliana Gastaldello Rando. 2022. Morphological Studies of Chamaecrista sect. Absus ser. Setosae (Leguminosae) With Emphasis on the Chamaecrista setosa Complex, Including A New Species. Systematic Botany. 47(4); 978-991. DOI: 10.1600/036364422X16674053033796 instagram.com/p/CoFJaRMubN_

Researchgate.net/publication/366506827_Morphological_Studies_of_Chamaecrista_sect_Absus

 instagram.com/p/CoFJaRMubN_ @petala_botanicalart

[Botany • 2020] Turnera macrosperma (Turneraceae: Passifloraceae s.l.) • A New Species from the Brazilian Cerrado

 Turnera macrosperma L.Rocha & Arbo,    

in Rocha et Arbo, 2020. 

DOI: 10.1600/036364420X16033963649309 

 Researchgate.net/publication/347675851

Abstract 

Turnera macrosperma, a new species from the Brazilian Cerrado, is described and illustrated. The new species belongs to the series Turnera and can be characterized by the white petals with dark blue/violet basal spot and large seeds with papillose aril. SEM images, distribution map, and comments on taxonomy and morphology are presented.

Keywords: Malpighiales; Protected areas; gen. Turnera ser. Turnera; taxonomy

  Turnera macrosperma.
A-D. Populations from Tocantins (A-B, D) and Goiás (C). B. Detail of reproductive branch, showing a floral button (X) and an immature fruit (Y). D. Habitat, in savanna vegetation (Cerrado domain) of Tocantins, Brazil.

Photos: J. Fiori (A-B, D) and P. L. Ribeiro (C).

Turnera macrosperma L.Rocha & Arbo, sp. nov. 

Lamarck Rocha and Maria Mercedes Arbo. 2020. A New Species of Turnera (Turneraceae, Passifloraceae s. l.) from the Brazilian Cerrado. Systematic Botany. 45(4); 826-832. DOI: 10.1600/036364420X16033963649309

  Researchgate.net/publication/347675851_A_New_Species_of_Turnera_from_the_Brazilian_Cerrado

[Botany • 2019] Aeschynomene chicocesariana (Leguminosae: Papilionoideae) • A Striking New Unifoliolate Legume Species from the Brazilian Chapada Diamantina and its Phylogenetic Placement in the Dalbergioid Clade

Aeschynomene chicocesariana D.B.O.S.Cardoso & G.Ramos,  

in Cardoso, Ramos, São-Mateus et de Queiroz, 2019.

DOI: 10.1600/036364419X15710776741530 

  Researchgate.net/publication/337544151

 Abstract

Unifoliolate leaves are relatively rare in the species-rich dalbergioid clade of papilionoid legumes (Leguminosae, Papilionoideae). For the pantropical, diverse genus Aeschynomene (ca. 180 species), the only known record of unifoliolate species described so far is the savanna-inhabiting A. simplicifolia from Chapada dos Veadeiros in Goiás, Brazil. The current work provides a description, illustrations, and a distribution map of another unifoliolate species, Aeschynomene chicocesariana , which was newly discovered in the rupestrian grasslands of Chapada Diamantina in Bahia, Brazil. Bayesian phylogenetic analyses of DNA sequence data (nuclear ribosomal ITS/5.8S and the plastid genes matK and trnL intron) have unequivocally placed A. chicocesariana with the rest of Aeschynomene species that are traditionally placed within Aeschynomene sect. Ochopodium. This result agrees with the shared morphology of A. chicocesariana and members of that section.

Keywords: Leguminosae; Ochopodium; Papilionoideae; taxonomy

General morphology of Aeschynomene chicocesariana.
A. Habit. B. Detail of the branch showing the non-peltate, basifixed stipules and unifoliolate leaves appressed against the erect stem. C. Detail of the terminal raceme to show the flowers. D. Indehiscent, single-seeded loments with the basalmost aborted article; note that the loments are borne on a very long stipe.

All photographs by Domingos Cardoso, from the specimen Cardoso et al. 3640 (HUEFS) at the type locality.

Aeschynomene chicocesariana D.B.O.S.Cardoso & G.Ramos, sp. nov.

  Domingos Benício Oliveira Silva Cardoso, Gustavo Ramos, Wallace Messias Barbosa São-Mateus and Luciano Paganucci de Queiroz. 2019. Aeschynomene chicocesariana, A Striking New Unifoliolate Legume Species from the Brazilian Chapada Diamantina and its Phylogenetic Placement in the Dalbergioid Clade. Systematic Botany. 44(4); 810 - 817. DOI:  10.1600/036364419X15710776741530 

  Researchgate.net/publication/337544151_Aeschynomene_chicocesariana_a_New_Species_from_the_Brazilian_Chapada_Diamantina

[Botany • 2020] Cryptanthus cinereus (Bromeliaceae: Bromelioideae) • A New Species in the Brazilian Atlantic Forest north of the São Francisco River, and its Contribution to the Taxonomy of the Genus

Cryptanthus cinereus D.M.C. Ferreira & Louzada,

in Ferreira et Louzada, 2020. 

DOI: 10.1600/036364420X15935294613491

 facebook.com/MorfoTax

Abstract

Cryptanthus cinereus D.M.C. Ferreira & Louzada, a new rare species of Bromeliaceae restricted to northeastern Brazil, is described and illustrated. Cryptanthus cinereus is a rupicolous plant that occurs in the Atlantic Forest on the top of a rocky outcrop and is known only from a single record. This new species is morphologically similar to Cryptanthus felixii, but differs mainly by its narrowly triangular leaves that are wider at base, primary bracts with adaxial surfaces densely lepidote (vs. glabrous or glabrous with base densely lepidote), shorter flowers (39–52 mm), sepal lobes lanceolate, with shorter connate sepals (1.6–5 mm) and petals (1–1.2 mm). An identification key to Cryptanthus cinereus and other species that occur in the Atlantic Forest north of the São Francisco River is provided. In addition, two species complexes are characterized for the area.

KEYWORDS: bromeliad, Poales, rocky outcrop

   

Débora Maria Cavalcanti Ferreira and Rafael Batista Louzada. 2020. A New Species of Cryptanthus (Bromeliaceae, Bromelioideae) in the Brazilian Atlantic Forest north of the São Francisco River, and its Contribution to the Taxonomy of the Genus. Systematic Botany. 45(3); 460-465. DOI: 10.1600/036364420X15935294613491

 facebook.com/MorfoTax/posts/2955233141420628

[Botany • 2023] Cirsium tukuhnikivatzicum (Asteraceae) • A New Species of Thistle endemic to the La Sal Mountains of Utah, USA

  Cirsium tukuhnikivatzicum Ackerf.,

in Ackerfield, 2023. 

DOI: 10.1600/036364423X16847773873170 

 facebook.com/DenverBotanicGardens

Abstract

Cirsium (thistles) have long been considered one of the most taxonomically challenging groups of plants in western North America. However, the relationships among thistles have become clearer thanks to recent molecular phylogenetic work. The results of this work revealed that Cirsium eatonii var. eriocephalum was polyphyletic, consisting of three distinct evolutionary lineages. Each of these lineages was also found to be distinct morphologically as well as geographically. Multiple lines of evidence thus indicated that Cirsium eatonii var. eriocephalum consisted of at least three distinct species. The first species recognized was the previously named C. scopulorum. The second lineage was recently named and described as Cirsium funkiae. The third lineage is here described as a new species, Cirsium tukuhnikivatzicum. Mount Tukuhnikivatz is a prominent backdrop against this new species of thistle. Tukuhnikivatz is also the Southern Paiute word for “place where the sun shines longest” and Ute word for “where the sun sets last.” The specific epithet tukuhnikivatzicum is therefore used to indicate the distribution of this species, while also acknowledging and paying tribute to the Southern Paiute and Ute legacy of use of the La Sal Mountains. There was a taxonomic lag time of 112 yr between the first specimen collection and the new species description presented here.

Keywords: Southern Paiute; Ute; herbarium specimens; iNaturalist; taxonomic lag

 

  

  Jennifer R. Ackerfield. 2023. Cirsium tukuhnikivatzicum, A New Species of Thistle endemic to the La Sal Mountains of Utah.  Systematic Botany. 48(2); 354-362. DOI: 10.1600/036364423X16847773873170

  facebook.com/DenverBotanicGardens/posts/614506460724113

  twitter.com/TAsteraceae/status/1717275026360086903

www.moabtimes.com/articles/new-thistle-species-is-rooted-literally-in-the-la-sals

[Botany • 2023] Pachycaulos huancabambae (Gesneriaceae) • Another Recently Recognized Monotypic Genus Is No Longer Monotypic: A Second Species of Pachycaulos from the Huancabamba Depression in Northern Peru

Pachycaulos huancabambae J.L.Clark & Moonlight,  

in Clark, Smith et Moonlight, 2023.

DOI: 10.1600/036364423X16936046516354

 twitter.com/PeterMoonlight

 

Abstract 

A new species is described from the Huancabamba Pass, a relict montane forest in northwest Peru, near the southwestern border of Ecuador. Pachycaulos huancabambae J.L.Clark & Moonlight is a terrestrial or lithophytic herb with scandent stems that grows in dense mats of bryophytes. This is the second species of Pachycaulos and renders that taxon as non-monotypic. We discuss several other genera of Gesneriaceae that are also no longer monotypic because of recent exploratory research in tropical forests and increased taxon sampling from ongoing phylogenetic studies. A molecular phylogenetic analysis based on nrDNA ITS is presented that strongly supports the monophyly and sister-group relationship of P. huancabambae and P. nummularia. Based on IUCN guidelines, a preliminary conservation status is assigned as Critically Endangered (CR).

Keywords: Andes; Columneinae; Gesnerieae; biodiversity; taxonomy

 Pachycaulos huancabambae J.L.Clark & Moonlight 

P. nummularifolia

 John L. Clark, James F. Smith and Peter W. Moonlight. 2023. Another Recently Recognized Monotypic Genus Is No Longer Monotypic: A Second Species of Pachycaulos (Gesneriaceae) from the Huancabamba Depression in Northern Peru.  Systematic Botany. 48(3); 410-418. DOI: 10.1600/036364423X16936046516354

 twitter.com/PeterMoonlight/status/1716863706624135424

artwork by Claire Banks 

[Botany • 2019] Microlicia longirostrata (Melastomataceae: Microlicieae) • A New Species from Goiás in central Brazil

 Microlicia longirostrata Romero, Fontelas & Versiane,

in Romero, Fontelas, Versiane et De-Paula, 2019. 

DOI: 10.1600/036364419X15562052252180 

 Researchgate.net/publication/344492571

Photos: R. Romero

Microlicia longirostrata (Melastomataceae), a new species from Goiás, is described and illustrated, and a discussion on leaf anatomy is also provided. The new species resembles M. consimilis and M. psammophila, but differs from them in having an indumentum with both short-stalked, spherical, glandular trichomes and long-stalked, glandular emergences, polysporangiate anthers and antesepalous stamens with a very long beak (2‐2.5 mm long), and annular collenchyma on the adaxial region of the midrib.

Keywords: Endemism; Microlicieae; Niquelândia; leaf anatomy; savanna

 Microlicia longirostrata Romero, Fontelas & Versiane.
A. Flowering branch. B. Leaf abaxial surface, with detail of the apex. C. Flower bud. D. Flower. E. Hypanthium and sepals. F. Petal. G. Small stamen (antepetalous). H. Large stamen (antesepalous). I. Gynoecium. J. Capsule. K. Seed.

(A-J: Fontela et al. 142).

 Microlicia longirostrata from Goiás.
 A. Habitat. B. Habit. C. Detail of the branches and leaves. D. Flower bud.

(Photos: R. Romero).

Microlicia longirostrata R.Romero, Fontelas & Versiane, sp.nov.

Etymology—The specific epithet refers to the long length (2–2.5 mm long) of the rostrum on the larger (antesepalous) stamens. 

Rosana Romero, Jean Corrêa Fontelas, Ana Flávia Alves Versiane and Orlando Cavalari De-Paula. 2019. Microlicia longirostrata, A New Species of Melastomataceae from Goiás in central Brazil.  Systematic Botany. 44(2); 349-354. DOI: 10.1600/036364419X15562052252180

  Researchgate.net/publication/344492571_Microlicia_longirostrata_a_New_Species_of_from_Goias_in_Central_Brazil

[Botany • 2019] Fritzschia cordifolia (Melastomataceae: Marcetieae) • A New Endangered Species from Espinhaço Range, Minas Gerais, Brazil.

Fritzschia cordifolia R.Romero, D.Nunes & M.J.R.Rocha, 

in Romero, da Silva, De-Paula et da Rocha, 2019. 

DOI:  10.1600/036364419X15620113920707

Abstract 

During a field expedition to the Serra do Cipó, Minas Gerais state, Brazil, we found a new species of Fritzschia, a genus endemic to campos rupestres from the Espinhaço Range. Fritzschia cordifolia has cordate and succulent leaves with an apical gland, petals with glandular-ciliate margin, campanulate hypanthium, and antesepalous stamens with ventral appendages with deltoid lobes. The presence of seeds with a crested testa is reported here for the first time in Fritzschia. A description and illustration of the new species is provided, as well as its conservation status and its geographical distribution.

KEYWORDS: Brazilian flora, Campos rupestres, endemic, SEM images, Serra do Cipó, taxonomy

Fritzschia cordifolia R.Romero, D.Nunes & M.J.R.Rocha

Rosana Romero, Diego Nunes da Silva, Orlando Cavalari De-Paula and Maria José Reis da Rocha. 2019. A New Endangered Species of Fritzschia Cham. (Melastomataceae, Marcetieae) from Espinhaço Range, Minas Gerais, Brazil.  Systematic Botany. 44(3); 664-669. DOI:  10.1600/036364419X15620113920707

Researchgate.net/publication/315850095_Fritzschia_furnensis

[Botany • 2020] Impatiens longlinensis (Balsaminaceae) • Ignored Biodiversity in Acid Soil Islands in Karst Areas, South China: A New Critically Endangered Species

Impatiens longlinensis S.X.Yu,

 in Xue, Xia, Lidén, Xu, Lu, Chen, Li et Yu, 2020. 

DOI: 10.1600/036364420X16033962925222 

Researchgate.net/publication/347681552

Abstract 

The karst area in South China is notable for its fragile vegetation and unique flora with many narrow endemic species, and is one of the most threatened biodiversity hotspots in the world. However, the biodiversity of acid soil areas scattered in the karst area have previously been underestimated. With a recent increase of new discoveries of plants and animals, the conservation of biodiversity in these acid soil areas has become urgent. This study deals with a new species, Impatiens longlinensis. The new species is similar to I. yui and I. lasiophyton in having pubescence, two lateral sepals, funnelform lower sepal, and linear capsule. But it can be distinguished by having orbicular to obovate dorsal sepals and oblong to elliptic lower and upper lobes of lateral united petals. Moreover, molecular data and micro-morphological evidence also support that the species is new to science. The new species is only known from a valley near the summit of Mt. Jinzhongshan within an area of less than 5 km2. Based on the Red List categories and criteria developed by the International Union for Conservation of Nature, and the threat posed by exploitation for tourism development, we categorize it as Critically Endangered (CR).

 Impatiens longlinensis S.X.Yu, sp. nov.

 Habitat and morphology of Impatiens longlinensis, I. yui, and I. lasiophyton.
A-E. Impatiens longlinensis. A. Habitat. B. Flowering individual. C. Flower in front view. D. Flower in lateral view. E. Flower in dorsal view.
F-H. I. yui. F. Flower in front view. G. Flower in lateral view. H. Flower in dorsal view.
I-K. I. lasiophyton. I. Flower in front view. J. Flower in lateral view. K. Flower in dorsal view.

Photos: A-E, I-K by S. X. Yu; F-H by Y. S. Chen.

 

Tian-Tian Xue, Chang-Ying Xia, Magnus Lidén, Wei-Bin Xu, Zhao-Cen Lu, Hai-Ling Chen, Shu-Wan Li and Sheng-Xiang Yu. 2020. Ignored Biodiversity in Acid Soil Islands in Karst Areas, South China: Impatiens longlinensis (Balsaminaceae), A New Critically Endangered Species. Systematic Botany. 45(4); 891-899. DOI: 10.1600/036364420X16033962925222 

Researchgate.net/publication/347681552_Impatiens_longlinensis_a_New_Critically_Endangered_Species_from_South_China